Speed-governor.



No. 724,765. PATENTED APR, 7, "1903. M. 0. WHITE & O.G.'DUYRYEA.

SPEED GOVERNOR. APPLIO-ATION FILED JUNE 17, 1902,

HQ MODEL.

06/20 6. Dal-yea.

UNITED STATES PATENT OFFICE.

MORRIS 0. WHITE AND OTHO C. DURYEA, OF LOS ANGELES, CALIFORNIA.

SPEED-GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 724,765, dated April 7,1903.

Application filed June 17, 1902. Serial No. 112,100. (No model.)

To all whom it may concern:

Be it known that we, MORRIS C. WHITE and OTHO O.DURYEA,citizens of theUnited States, residing at Los Angeles, in the county of Los Angeles andState of California, have invented new and useful Improvements in Speed-Governors, of which the following is a specification. V

Our invention relates to means for governing an electric generator byfrictional devices which are controlled by means operating bycentrifugal force.

One object of the invention is to provide means whereby a dynamo whichgenerates an electric current for sparking purposes in anexplosive-engine may be driven at a substantially regular speed.

Another object is to provide means whereby the maximum of friction maybe obtained with the least possible heating of the parts.

Another object is to provide a governor of the character described inwhich the required amount of friction is produced without the use offriction-wheels of large diameter, thus rendering the governorespecially useful for automobile-engines, where economy of space is animportant desideratum.

Another object is to provide means whereby the governor may bemanuallyadj'us'ted quickly and positively.

Other objectssuch as simplicity of construction, effectiveness inoperation, durability of the parts, and other desirable features notmentioned above'will be brought out in the description of the invention.

Referring to the drawings, Figure I is a sectional view of theinvention, only a portion of the dynamo being shown. Fig. II is a detailof a centrifugal device. Fig. III is a side elevation of the centrifugaldevice with the spring removed.-

Upon the shaft 1 of an electric machine 2 a pulley 3 is loosely mounted,being movable longitudinally of the shaft and also adapted to turnrelatively to the shaft.

4 is a bushing for the pulley. The pulley 3 is provided withfriction-surfaces 5, which are formed by the walls of conical-shapedrecesses in each side of the pulley. The pulley is also provided withair-grooves 6 adjacent each friction-face and preferably concentrictherewith, so that a free circulation of air around the metal adjoiningthe friction-faces is secured,which prevents the metal from undulyheating. I

7 is a conical friction-piece rigidly attached to the shaft 1 by a pin8. The friction-piece 8 projects into one conical recess of the pulleyand frictionally bears against the face of the recess. 9 is anotherconical friction-piece which projects into the opposite conical recessof the pulley and frictionally bears against the face of its adjacentrecess. friction-piece 9 is loosely mounted on the shaftl and isprovided with diametrically opposite slots 10, into which a pin 11projects and prevents the friction-piece 9 from turning relatively tothe shaft 1, but allowing a longitudinal movement of the friction-pieceon the shaft.

The pulley 3 may be driven by a belt fro the engine with which thedynamo cooperates in producing the sparks necessary for ignition.

The amount of friction with which the pulley engages bothfriction-pieces determines the relative speed of the dynamo. Therequisite amount of frictionmay be obtained by slightly moving the piece9 relatively to the pulley.

The movement of the piece 9 is obtained automatically by providing itwith a coned face 12, against Whichweights 13 may bear. The weights13are each slidably mounted on rods 14, which project from diametricallyopposite sides of a hub 15 and may preferably be integral therewith.

The hub 15 is rigidly mounted on the shaft 1, the pin 11 passingtherethrough.

The weights 13 are preferably curved and are dished slightly to fit theconed face of the piece 9, against which they bear. Each weight ispreferably provided with a series of holes 16. The axes of each seriesof holes converge toward the shaft 1.

17 represents pins, which are suitably positioned in the holes, andsprings 18 c0nnect each set of pins and serve to draw the weightstowardeach other, and thus cause the piece 9"to bear with considerablepressure against the pulley 3 and the latter in turn to similarly bearagainst the piece 7.

The pins 17 are positioned in suitable holes to obtain the requisitetensionvof the springs The 18. When the pulley 3 is driven, itfriction-- ally bears against each piece 7 and 9 and causes them torevolve, which drives the shaft and dynamo. WVhen the speed of thepulley increases, the weights are caused to fly out and allow a slightretraction of the piece fl, which eases the friction existingbetween thepulley and both friction-pieces, and thereby reduces the speed of theshaft to regular speed. Vhen the pulley falls below the regular speed,the weights are drawn together by the springs, which forces the pulleyand friction-pieces closer together, increases the friction, and raisesthe speed of the shaft and dynamo. Thus should the speed of thepulleydrop very low the weights might be drawn together by the springsand the pulley and friction-pieces would be crowded together,so thatthere would be no slip between the pill? ley and friction-pieces, andthe parts would all revolve at the same speed, which would raise thespeed of the dynamo. The series of holes in each weight permits ofchanging the position of the pins, so that the tension of the springsmay be regulated. By giving the pins a slant relatively to the line ofdraft of the springs, as described, the pins are securely held fromaccidental displacement, although they may readily be changed to otherholes when desired by removing the spring.

Bycmploying conical-shaped friction-pieces a suflicient area offriction-surface is obtained with compact parts of small diameter.

We do not limit ourselves to the particular material of which the partshaving frictionfaces are made.

It is obvious that the herein-described embodiment of our invention issusceptible of various modifications Without evading the scope of theclaims.

What we claim, and desire to secure by Letters Patent of the UnitedStates, is

1. In combination with the shaft of an electric machine, afriction-piece rigidly mounted on said shaft, another friction-pieceslidably mounted on said shaft, apulleyloosely mounted on said shaft andbearing against said friction-pieces, and a centrifugal device mountedon said shaft and operatively engaging said slidable piece.

2. In combination with the shaft of an electric machine, a conicalfriction-piece rigidly mounted on said shaft, another conicalfriction-piece slidably mounted on said shaft, a pulley having a conicalrecess in each end thereof, said pulley being loosely mounted on saidshaft between said friction-pieces, each friction-piece projecting intoa conical recess, and a centrifugal device mounted on said shaft andoperatively connected to said slidable piece.

3. In combination with the shaft of an electric machine, a' conicalfriction-piece rigidly mounted on said shaft, another conicalfriction-piece slidably mounted on said shaft, a pulley having a conicalseat in each end thereof, said pulley being loosely mounted on saidshaft between saidfriction-pieces and having an annular grooveconcentric with its conical seat, and a centrifugal device mounted onsaid shaft and operatively engaging said slidable piece.

4. In combination with the shaft of an elec tric machine, afriction-piece rigidly mounted on said shaft, another friction-pieceslidably mounted on said shaft, a pulley loosely mounted on said shaftbetween said friction-pieces and bearing against said friction-pieces,hubs rigidly mounted on said shaft, a weight slidably mounted on eachhub, said weights having dished faces, said slidable friction-piecehaving a coned face which bears against the dished faces of saidweights, and means for yieldingly holding said weights against the conedface of said slidable friction-piece.

5. In combination with the shaft of an electric machine, afriction-piece rigidly mounted on said shaft, another friction-pieceslidably mounted on said shaft, a pulley loosely mounted on said shaftbetween said friction-pieces and'bearing against said friction-pieces,hubs rigidly mounted on saidshaft, a weight slidably mounted on eachhub, said weights having dished faces, said slidable friction-piecehaving a coned face which engages the dished faces of said weights, andsprings connected with said weights for yieldingly holding said weightsin contact with said slidable frictionpiece.

6. In combination with the shaft of an electric machine, friction-piecesmounted on said shaft, one of said pieces being movable on said shaft, apulley loosely mounted on said shaft between said friction-pieces andbearing against the same, weights connected to said shaft and yieldinglyheld against said movable friction-piece,said weights having dishedfaces which bear against said movable friction-piece.

7. In combination with the shaft of an electric machine, conicalfriction-pieces mounted on said shaft, one of said pieces being slidableon said shaft, a pulley loosely mounted on said shaft between saidfriction-pieces, said pulley having oppositely-arranged conicalrecesses, said conical friction-pieces projecting into opposite recessesin said pulley and bearing against the pulley, weights connected to saidshaft and yieldingly held against said slidable friction piece, saidweights having dished faces which bear against said slidablefriction-piece.

8. In combination with the shaft of an electric machine, conicalfriction-pieces mounted on said shaft, one of said pieces being slidableon said shaft, a pulley loosely mounted on said shaft between saidpieces, said pulley having oppositely-arranged conical recesses, theconical friction-pieces projecting into the recesses in said pulley,said slidable frictionpiece having a longitudinal slot therein, a pinconnected to said shaft and projectinginto said slot, weights connectedto said shaft and yieldingly held against said slidable frictionpiece,said weights having dished faces which bear against said slidablefriction-piece. 9. In combination with the shaft of an electric machine,a conical friction-piece rigidly mounted on said shaft, another conicalfriction-piece slidably mounted on said shaft, a pulley loosely mountedon said shaft between said friction-pieces and havingoppositely-arranged conical recesses, each conical frictionpieceprojecting into opposite recesses in the pulley, hubs on said shaft,diametrically opposite rods projecting radially from said hubs, weightsslidably mounted on said rods, one of said weights having a series ofholes, a pin in one of said holes, a spring connected to said pin and tothe other weight, said slidable friction-piece having a coned face, saidweights having dished faces which bear against the coned face of saidslidable piece. 10. In combination with the shaft of an electricmachine, oppositely-arranged weights connected to said shaft, each ofsaid weights having oppositely-arranged series of holes on said shaft,two pins on each weight, said pins lying in holes in the oppositeseries, springs connected at one end to the opposite pins of one weightand at the other end connected to the opposite pins of the other weight,the angle between the line of direction in which said pins extend andthe line of draft of said spring being an acute angle, and meanscooperating with said weights for frictionally driving said shaft.

11. In combination with theshaft of an electric machine, afriction-piece slidably mounted on said shaft, a pulley loosely mountedon said shaft and bearing against said friction-piece, anotherfriction-piece rigidly mounted on said shaft and bearing against theopposite side of said pulley, weights flexibly mounted on said shaft,said weights being movable radially on said shaft and having meansbearing against said slidable friction-piece for moving said piecelongitudinally.

In testimony whereof we have signed our names to this specification, inthe presence of two subscribing Witnesses, at Los Angeles, California,this 10th day of June, 1902.

MORRIS 0. WHITE. OTHO C. DURYEA.

Witnesses: v

' G. T. HAcKLEY,

F. M-. TOWNSEND.

